Version 1.0 28/04/20 Page 2 of 4

Glass gives modern buildings their spacious, open-air look and feel. Frameless glass facades allow designers and planners to create stunning designs that are free from interruption of framing. Glass offers many aesthetic and structural benefits. It provides clear sightlines and structural safety while improving the visual aesthetics of the building.

Dasco Entrance Technology recommends, supplies and installs toughened glass assemblies for a variety of applications. Toughened glass is manufactured by subjecting final size glass to a heating and cooling treatment that sets up high compressive stresses at the surfaces and balancing tensile stresses in the centre. The high compressive surface stresses give toughened glass its increased resistance to mechanical and thermal stress. In other words, special heat treatment gives toughened glass great strength.

Benefits Toughened Glass Assemblies offer a proven solution for impact safety and strength: • Up to 5 times stronger than ordinary glass of the same thickness • Achieves Class 1 (C) when tested to BS EN 12600 for pendulum body impact resistance and meets the

requirements of many worldwide safety standards • Because of its increased strength, toughened glass allows architects and builders far greater scope in their

use of glass in buildings. • Toughened glass may be heat soaked for extra confidence in use, especially at height and overhead uses. • Ideal for use in countless applications, including windows, barriers, interior design, and awnings • When broken, toughened glass shatters into small, blunt-edged fragments to reduce the risk of personal

injury. Ordinary glass breaks into sharp shards that can cause severe injury. • A wide range of design options is available, because almost all glazing products can be supplied in

toughened form. • Toughened glass can be cut to complex shapes and can have holes for mounting hardware. • Toughened glass can be laminated, combining the advantages of superior strength with safety in the event

of breakage.

Toug

hene

d G

lass

Ass

embl

ies

Version 1.0 28/04/20 Page 3 of 4

Processing Shapes Shapes other than rectangles can be manufactured – within some limits. Cutouts can be made for locks, pivots, and patch fittings prior to the heat treatment process. After treatment, toughened glass cannot be cut or worked. Edges An arrissed edge is the simplest type of edgework and consists of removing the sharp edges from ‘as cut’ glass. Flat ground edges give a flat profile with smooth arris. A polished edge can be specified for exposed edges. Holes Toughened glass can be supplied with drilled holes, generally with diameter ranging from the glass thickness up to 30mm. Holes up to 100mm can be processed, depending on the panel’s limiting factors. There are limitations on the position of holes relative to edges and corners. Heat soaking Toughened glass is available in heat soaked form, compliant with EN 14179. Heat soaking may be specified for applications where a reduction in breakage risk is required. Examples include barrier applications, spandrel panels and roof glazing. Marking Safety glass only complies with BS 6206:1981 / BS EN 12600 if it is marked. The standard requires all installed panels to be marked as follows:

• An identifiable trade name or other mark capable of identification through a suitable source

• The type of material • The number of the British Standard: BS EN 12600 and the classification

achieved.

Technical Thermal Durability The mechanical properties of toughened glass are unchanged for continuous service up to 250°C and unaffected by temperatures below 0°C. Toughened glass is capable of resisting temperature differentials up to 200°C. Typical Single Panel Sizes

Width (mm) Height (mm) Minimum 300 x 500 Maximum 2000 x 4200

Thickness

Minimum 4mm Maximum 19mm

Mounting Toughened glass is mounted in a variety of ways, including channels, spiders and patch fittings. A wide range of materials and finishes is available.

Patch fittings are compact & unobtrusive Spider fittings are available for specific needs

Toug

hene

d G

lass

Ass

embl

ies